I didn't know that, thank you.nope, it shouldn't. the title king of bavaria is a napoleonic creation. before 1806 bavaria was a duchy. and afaik there hasn't yet been an equivalent title creation ittl.
@Basileus444: how likely is it for the German Emperor to send an army (which is what'd be needed to dislodge the Romans) to Hungary? His realm is just out of a civil war and the belligerent Triunes are still there.
He'd have tons of mercenaries to spare now, but those would be rather piecemeal help against the Romans I feel.